DP83848MPTBREP - 10/100 Ethernet PHY | Texas Instruments
部品番号: DP83848MPTBREP ✓ 生産中DP83848MPTBREP 概要
An Ethernet physical-layer transceiver, or PHY, is the semiconductor interface between a digital network controller and copper cabling. A PHY converts digital data into electrical signaling for transmission and recovers incoming signals for the digital Ethernet controller. The DP83848-EP therefore belongs to the hierarchy Ethernet transceiver -> Ethernet interface IC -> network interface semiconductor, while the DP83848MPTBREP is the enhanced-product, military-temperature member of the DP83848 family.
The primary headline characteristics are a 10/100 Mbps data rate, one Ethernet port, IEEE 802.3u compliance, and operation from -55°C to 125°C. Full- and half-duplex modes provide flexibility for systems operating with different network traffic patterns. The 48-HLFQFP package exposes 48 terminals and uses a square gull-wing form factor suitable for multilayer PCB assembly in equipment where environmental robustness is important.
The DP83848-EP was developed for Ethernet connectivity in harsh environments. Its extended temperature capability differentiates it from standard-temperature DP83848 variants and makes it relevant to industrial control, military communications, aerospace electronics, telemetry equipment, and outdoor network infrastructure. Designers should still verify the complete electrical, clocking, termination, isolation, and magnetic-interface requirements against the manufacturer datasheet for the final system.
Typical implementations place the PHY beside an Ethernet controller, connect it through an integrated digital interface, and route its analog TX and RX lanes through an isolation transformer or compatible Ethernet magnetic component. The digital interface provides the logical path to the host processor, while the analog section performs cable-facing transmission and reception. PCB signal integrity and magnetic-component selection are therefore central to achieving reliable 10BASE-T and 100BASE-TX operation.
For new layouts, use the manufacturer pin-description table and recommended application information to assign all 48 terminals, configure strap inputs, route differential pairs symmetrically, and provide the required decoupling. Pay particular attention to ground continuity, return paths, component spacing around the magnetic interface, and the separation between sensitive receive circuitry and switching or high-current sections.
This product page consolidates the exact manufacturer and distributor identifiers, package information, environmental claims, application guidance, replacement analysis, and PCB design considerations into one engineering reference. It also distinguishes confirmed drop-in candidates from related family members whose temperature grades or pin compatibility cannot be treated as equivalent without validation.
ドロップイン代替品: DP83848MPTBREP — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: DP83848MPTBREP （同一形状・フットプリント） — 相違点: Product Type.
DP83848CVV/NOPB
✅ ドロップイン価格はお問い合わせください
データシートを見る →DP83848IVV/NOPB
✅ ドロップイン価格はお問い合わせください
データシートを見る →DP83848MPTBREP 仕様
| Product Type | Single-port Ethernet physical-layer transceiver |
| Supported Data Rate | 10/100 Mbps |
| Number of Ports | 1 port |
| Duplex Operation | Full- and half-duplex |
| Ethernet Standard | IEEE 802.3u |
| Minimum Operating Temperature | -55°C |
| Maximum Operating Temperature | 125°C |
| Temperature Grade | Military |
| Package Type | 48-HLFQFP |
| Package Body Size | 7 x 7 mm |
| Package Shape | Square |
| Terminal Form | Gull-wing |
| Number of Terminals | 48 |
| Series | PHYTER |
| RoHS ステータス | Compliant |
DP83848MPTBREP square ピン配置ガイド
DP83848MPTBREP (square パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: DP83848MPTBREP.
詳細は データシート をご参照ください。
主な用途
DP83848MPTBREP の用途: 6 件s: Industrial Ethernet Control, Military Communication Equipment, Aerospace and Avionics Ethernet, Outdoor Network Gateways, Telemetry and Remote Monitoring, Test and Measurement Equipment.
Industrial Ethernet Control
The DP83848MPTBREP fits industrial control systems requiring a 10/100 Mbps copper Ethernet interface across a -55°C to 125°C operating range. It can sit between a network controller and an Ethernet magnetic interface, converting between the controller's digital signaling and the cable-facing analog PHY functions. Full- and half-duplex support provides operating flexibility for common industrial traffic patterns. The design must preserve continuous ground references, provide clean decoupling, and route the differential Ethernet channels as controlled impedance pairs. Its extended temperature range is especially relevant to equipment exposed to temperature variation inside industrial enclosures, although the enclosure, transformer, power supply, and installed components must be qualified for the same environment.
おすすめ
Military Communication Equipment
DP83848MPTBREP is appropriate for military communication equipment that requires a 10/100 Mbps Ethernet physical layer in a severe temperature environment. Its -55°C to 125°C rating distinguishes it from standard-temperature DP83848 options and supports use in temperature-controlled shelters, mobile systems, field equipment, or ruggedized platforms. The PHY can connect a digital Ethernet controller to an external isolation transformer, but the complete interface still requires careful attention to grounding, isolation, radiated emissions, and conducted susceptibility. Designers should validate the assembled system's clock source, termination network, magnetic component, cable shield grounding, and power sequencing under the applicable qualification conditions rather than relying on the PHY rating alone.
おすすめ
Aerospace and Avionics Ethernet
The DP83848MPTBREP can support 10/100 Mbps Ethernet links in avionics, telemetry, and aerospace-support equipment where the operating envelope exceeds ordinary commercial-temperature PHYs. The IEEE 802.3u compliance and military temperature capability provide a defined starting point for the physical layer, while full- and half-duplex modes allow compatibility with different system traffic policies. In aerospace systems, engineers must still verify the exact approved-part status, electromagnetic compatibility, isolation architecture, and environmental qualification of every component. PCB layout should use short differential routes, uninterrupted ground planes, disciplined return paths, and carefully placed bypass capacitors to prevent signal-integrity degradation along the PHY-to-transformer path.
おすすめ
Outdoor Network Gateways
Outdoor Ethernet gateways benefit from the DP83848MPTBREP's -55°C to 125°C range because exposed equipment can experience significant temperature variation over its service life. The 10/100 Mbps rate is suitable for management networks, access equipment, environmental sensors, and remote supervisory links that do not require multi-gigabit throughput. A practical implementation places the PHY beside the system controller and uses a qualified Ethernet isolation transformer at the cable boundary. The layout should separate receive and transmit routing, maintain symmetry between each differential pair, provide local high-frequency bypass capacitance, and avoid long copper stubs. The enclosure's thermal design remains critical because a rated component cannot compensate for excessive enclosure temperature or poorly qualified magnetics.
おすすめ
Telemetry and Remote Monitoring
The DP83848MPTBREP is suitable for telemetry equipment that carries management or sensor data over a 10/100 Mbps Ethernet physical layer. Its single-port configuration is appropriate for systems with one cable-side network link, and the broad temperature specification supports remote equipment exposed to severe ambient conditions. The PHY interfaces with a digital Ethernet controller while the external magnetic component provides the physical isolation and impedance environment required by copper Ethernet. Design teams should implement a deterministic reset and clock arrangement, follow the manufacturer's recommended capacitor placement, and maintain the specified return-path continuity. For remote installations, component qualification, surge protection strategy, cable fault behavior, and thermal management are as important as nominal data-rate performance.
おすすめ
Test and Measurement Equipment
The DP83848MPTBREP can be used in test and measurement instruments that require an embedded 10/100 Mbps Ethernet management or synchronization port. The PHY's full- and half-duplex support accommodates instrument control traffic and diagnostic modes, while the extended temperature range supports compact systems intended for controlled but demanding environments. In a typical instrument, the PHY connects the main controller to a front-panel or rear-panel RJ45 network through an isolation transformer. Differential routing must remain symmetrical, and bypass capacitors should be placed close to the supply pins. Designers should also keep switching regulators and high-current analog sections separated from the receive path and verify isolation, grounding, and emissions performance as part of the complete instrument design.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: DP83848MPTBREP — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | DP83848CVV/NOPB | DP83848IVV/NOPB |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-HLFQFP (7x7) | 48-HLFQFP (7x7) | 48-HLFQFP (7x7) |
主な差別化要因
- Extended military-temperature operation （vs DP83848CVV/NOPB)
- Designed specifically for harsh-environment Ethernet （vs DP83848IVV/NOPB)
- Defined 48-terminal mechanical format （vs DP83848C)
設計ノート
Use the manufacturer 48-HLFQFP footprint and pin-description table as the controlling references. Place input and output bypass capacitors close to their associated supply terminals, preserve uninterrupted ground-plane continuity beneath the device, and route each Ethernet differential pair as a tightly coupled pair with matched geometry. Keep the PHY-to-magnetic-component path short and avoid adding stubs or test pads that materially disturb high-speed return paths.
Separate the cable-side receive and transmit routing from digital clocks, switching nodes, and high-current power paths. Maintain symmetry between TX and RX differential pairs and provide a continuous reference plane beneath them. The Ethernet isolation transformer should be located close to the connector and PHY where the application reference design permits, while avoiding copper or components that interfere with the required isolation boundary.
The DP83848MPTBREP requires stable, low-noise supply sequencing for reliable operation. Confirm the exact digital, analog, and I/O supply values from the manufacturer datasheet before selecting regulators or termination components. Verify startup behavior, reset timing, clock source arrangement, and the voltage ramp at the device. Do not infer those electrical conditions from the product-family description alone.
The device is rated from -55°C to 125°C, but that rating does not remove the need for a system-level thermal design. Estimate the worst-case internal temperature rise from board exposure, enclosure airflow, copper area, and adjacent heat sources, then verify that the PHY, magnetic component, controller, and power circuitry remain within their respective ratings at every hot corner. Use the manufacturer's recommended copper and layout practices without assuming that every thermal estimate applies directly to the device.
Do not substitute DP83848C into a design that requires the DP83848MPTBREP's military temperature range; Texas Instruments support material identifies temperature grade as a decisive incompatibility. Also validate configuration straps, clock requirements, pin multiplexing, and supply levels for every proposed alternate. A matching package outline alone does not prove functional interchangeability or equivalent environmental qualification.
コンプライアンス情報
RoHS compliance is stated in the exact-MPN distributor record. No separate REACH, lead-free, halogen-free, conflict-minerals, or automotive-grade qualification claim is established for this device.
